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Mitsubishi Electric Manuals
Inverter
FR-A520-0.4K -55K
Instruction manual
Pwm Carrier Frequency (Pr. 72, Pr. 240) - Mitsubishi Electric FR-A520-0.4K -55K Instruction Manual
Transistorized inverter, high function & low acoustic noise
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Mitsubishi Electric
FR-A520-0.4K -55K
Instruction Manual
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z
PWM carrier frequency (Pr. 72, Pr. 240)
Pr. 72 "PWM frequency selection"
Pr. 240 "Soft-PWM setting"
You can change the motor tone.
By parameter setting, you can select Soft-PWM control which changes the motor tone.
z
Soft-PWM control changes motor noise from a metallic tone into an unoffending complex tone.
z
Parameter
Factory Setting
Number
72
2
240
1
<Setting>
·
Refer to the following list and set the parameters:
Parameter
Factory Setting
Number
72
0 to 15
0
240
1
Note: 1. A reduced PWM carrier frequency will decrease inverter-generated noise and leakage current but
increase motor noise.
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com
Setting Range
Remarks
0 to 15
0: 0.7kHz, 15: 14.5kHz
0, 1
1: Soft-PWM valid
PWM carrier frequency can be changed.
The setting displayed is in [kHz]. Note that 0 indicates 0.7kHz and 15 indicates 14.5kHz.
Soft-PWM invalid
When any of "0 to 5" is set in Pr. 72, Soft-PWM is made valid.
94
PARAMETERS
Description
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